Invoice/Revenue etc. not saving? Can't see much in debug.

Hi,

I cannot seem to add any invoices or revenues etc. the only thing i can add so far is customers... any ideas?

 

The page just refreshes and doesn't output anything when I click save!

Thanks

<p>Hi,</p><br /> <p>I cannot seem to add any invoices or revenues etc. the only thing i can add so far is customers... any ideas?</p><br /> <p> </p><br /> <p>The page just refreshes and doesn't output anything when I click save!</p><br /> <p>Thanks</p>

Can anyone help??

<p>Can anyone help??</p>